I'm using fluxbox for a couple of years now, after being a long-time fvwm user and getting sick of it. Though, I don't do anything very fancy (transparency, slit) with it, and in fact have gone to considerable lengths to make it look boring, lol

For those who like playing with new wm's just for fun, a couple that caught my attention while searching were:

Before cwm was a part of OpenBSD base and cleaned of bugs I used OpenBox. I also like JWM and recommend it to people who like more conventional desktop environment. Actually JWM uses less memory than OpenBox and even less memory
than TWM. It has as dependency only one X library so in practical sense is smaller than dwm.

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"The basic tool for the manipulation of reality is the manipulation of words. If you can control the meaning of words, you can control the people who must use the words." -Philip K. Dick

A story I heard from one of the original developers was that he started hacking on cwm because he had sprained his wrist, so he was wanting to stay away from heavy mouse usage for awhile. Since windows no longer have title bars to grab with a mouse, the mouse plays an increasingly minor role in navigating the X landscape.

cwm is a bit different, but it has a place. If you like keyboard shortcuts, you might really like it.

I am currently using KDE 4.x. I switched from KDE 3.x to KDE 4.x in January 2009 and have been very pleased with the desktop itself. I have been a little disappointed with the rate at which certain applications are transitioning from KDE 3.x to KDE 4.x, though. I guess I'll have to keep those 3.x libraries installed for a while.

I've been using KDE ever since I started using FreeBSD in 2003. The funny thing is when I installed FreeBSD for the very first time, I wanted to install GNOME but it didn't work so I tried KDE instead. I've been hooked ever since.

At home, on those rare occasions that I use X, I use Openbox. Prior to that, I used Fluxbox and Blackbox, with brief sojourns into ratpoison, fvwm and twm.

Since reading an article on undeadly, I've wanted to give cwm a spin now that it's in base, but will probably wait for 4.6 to do that. I've been going more and more minimalist with each release, in the sense that I try to add as few packages as possible now.

Used to run KDE 3.5, then switched to 4.2 when it became more or less stable and usable. Tried to installed 4.2 on 8-Current, but it failed when compiling USB-related code. Installed XFCE from packages - so far fine.

BTW here is the error when building KDE 4 on 8-current (updated July 10):

My primary WM is XFCE. I use XFCE primarily because of xfce4-panel and terminal.

I will also use Fluxbox when I need a "minimal but usable" WM on a system where I don't want a lot of extraneous things installed, but need an X application. I have Ocicat to thank for introducing me to Fluxbox.

I have an Ubuntu partition on my laptop for some Linux-only apps, and use the default Gnome. I used to have Xubuntu installed, but switched because Xubuntu has Gnome libraries and applets installed anyway, so it may as well be Gnome, and Ubuntu was easier to adminstrate than Xubuntu.